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0a. a, 1929. 'J; H, STORTZ 1,730,543

IACHINE FOR MAKING PASTEBOARD BOXES Filed Nov. 27. 1928, 2 Sheets-Shea: l

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Ci "NE FOR-MAKING PA STEBOARD BOXES med Nov. 27, 192a-v z Sheets-Sheer. 2

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Patented Oct. 8, 1929 JOHN H. STORTZ, OF PHILADELPHIA, PENNSYLVANIA MAQHINE FOR MAKING PASTEBOARD BOXES Application filed November 27, 1928.

This invention relates to a machine for making pasteboard boxesand more particularly to a mechanism for bending inwardly the edges of a rectangular box so that they will maintain an upright position.

Heretofore it has been customary to provide a pasteboard box with a covering of glazed or decorated paper or the like in one machine and to thereafter manually transfer the box to a machine adapted to bend inwardly the sides thereof so as to maintain them in upright position at right angles to the main portion of the box bottom or lid. The boxes have heretofore been arranged in the side bending machine by hand.

It is an object of the present invention to combine the box covering or lining machine with a machine for bending inwardly the edges thereof, the two machines being driven in synchronism so that the operations will take place in proper sequence. More detailed ob 'jects along this line relate to the provision of cllicient mechanisms for properly moving the boxes from one machine to the other.

5 Further objects of the invention relate to details of construction of the side bending mechanism whereby the boxes may he automatically placed in proper position between the jaws, and ejected therefrom after the bending operation.

In the accompanying drawings:

Fig. 1 is a sectional view more or less diagrammatic showing the relationship between the two mechanisms mentioned above and illustrating the mcans for driving the two in synchronisn'i.

Fig. 2 is a section on line 22 of Fig.1.

Fig. 3 is a top plan view of the bending mechanism.

Fig. 4 is a vertical section showing details of the bending mechanism.

Fig. 5 is a plan View of the cam disc for actuating the jaws. showing the supporting shaft thereof in section.

Serial No. 322,114.

Fig. 6 is a sectional detailed view on line s e of Fig. 1.

Fig. 7 is a diagrammatic sectional view illustrating the mode of operation of the side bending jaws.

The machine which is adapted to place on the pasteboard boxes the glazed or decorated paper cover is shown diagrammatically at 2. Since the details of mechanisms of this sort are well known and this invention is adapted to any of the usual forms, the same is not described fully. There is present in this machine a vertical movable table member 4 on which the pasteboard box indicated at 6 is carried during the covering process. Upon completion of the coverin process, the table 4'occupies a position suci as illustrated in Fig. 1, while the box is supported thereon in upright position.

Plunger 8 is mounted to reciprocate in suitable bearings in the frame of machine 2 in alignment with box 6 when it is in its final position illustrated in Fig. 1. Plunger 8 is urged in a forwardly direction by means of a spring 10, one end of which abuts the frame N while the other end ei'igagcs a block 12 carried by the plunger, which block is engaged in a. slot in the end of a bell crank lever 14 which is provided with a cam roller arranged to engage the periphery of cam 16. A stop 18. which is pre fcrably provided with a rubher or other soft face to take up shock, is carried by a rear end of plunger 8. Cam 16 is carried by a vertical shaft 20 which is driven through suitable mechanism in synchronism with the other parts of machine 2. Cam 1G is provided with a tapered portion as shown. As rotation of shaft 20 brings this depression into alignment with the cam roller on lever 14. spring 10 produces a sudden forward movement of the plunger, which engages box 6 and forces it from table member 4 upon a suitable chute which will be hereafter described. 1

The side bending machine comprises a i so.

table 22 in which are formed slides 24 providing guideways for sliding blocks 26 which haveinwardly and upwardly extending faces 28 providing box engaging jaws. Extending downwardly from each lock 26 is a pin or roller 30 engageable within a slot 32 in a disc 34. As illustrated in Fig. 5, slots 32 extend eccentrically with respect to the center of rotation of disc 34. Accordingly, oscillation of disc 34 produces simultaneous inward or outward movement of the blocks. Jaw por-' tions 28 are preferably adjustable-lengthwise of the box so as to take care of boxes of different sizes. When the jaws operate, =t-he box lies on table 22 between the same and the jaws move inwardly, engaging the central ortions of the sides of the box, bending t ie same inwardly, as illustrated in Fig. 7, thus removing from the sides their tendency to spring outwardly which they normally have after removal from the preceding covering machine.

Disc 34 is carried by a vertical shaft '36 having suitable hearings in the machine frame. Shaft 36 is provided withan arm 38 which is connected by a link 40 with a crank connected to one of a pair of bevel gears 42, the other gear of which pair is secured to a shaft 44 driven by means of a universal connection 46 and bevel gears-4S from shaft 20. By this means, the mechanisms of the two machines are driven in proper synchronisni, the inward motion of the jaws taking )lace subsequently to the discharge of a box ror'n the covering machine when such box reaches its proper position.

In order to properly guide the box after its discharge from the covering machine, upwardly extendin guide plates 50 are provided on the si e bending machine, tnesc plates being adjustable on rods 52 to accom;

modate the varying sizes of boxes. Posi tioned between plates 50 and also adjustable along one of rods 52 are chute members 54 on which are mounted, on horizontal axes. rollers 56 which extend above the to s of members 54 and engage a box moving own wardly thereover, thus-providing'an anti: friction conveyor for the box.-: -.-.This antifriction feature is found to be important, since it is foundthat if an attempt is made to slide a box down a metallic chute in damp weather, the friction is so increased as to prevent positive and proper feeding of the box. Members 54 are pivotedat their lower ends to members 58, adjustable on rod 52, and are provided with slots in which may be adjustably engaged the upper ends of levers G0, the lower ends of which are pivoted to members 58, as illustrated in Fig. 1.

A suitable stop means (31 is carried by either both of members 54 or one of them in order to properly position the rear end of a box sliding ownwardlv over the chuteafter the forward end thereof has engaged a stop 62 which is adjustable in a slide mountedon transverse rod 52. By meansof stops (it and 62, which may be adjustable toward and from each other in order to take care of varying thicknesses of boxes, and also by reason of. the adjustability of) guides-50 and members fi, a 7 box delivered by: the chute will fall into proper position'between jawsjta', these jaws being in outer positions upon such delivery. Accordingly, it will be observed that the operation taking place in machine 2 is automatically followed by discharge of the box therefrom and its automatic placement in position between the jaws, this action being in turn automatically followed by inward movement of the jaws to produce the proper bending of the sides.

In order to further produce an automatic action, there is provided a mechanism for automatically discharging the boxes after the sides thereof are bent and after j aws 28 have receded from their operative position. In order to accomplish this, a small table or plate (54, is provided on top of a suitable plunger so as to lie flat upon table 22 during the bending operation, but which may be lifted thereabove to raise the box clear of jaws 28 subsequent to such bonding operation. The rod which carries plate 61 is provided at its bottom end with an outwardly extending arm 66 to which is connected. a link 68 pivoted to a lever 70. Lever 70 is provided with a cam roller which is maintained by the spring 71 in engagement with a cam 72. Rotary motion of cam 72 will thus produce an upward movement of plate 64 to raise the box from the The rod carrying plate 64 extends downwardly within shaft 36, which is provided with a suitable tapered slot-in the side thereof so as to permit free upward and downward moven'icnt of arm 66 and also so as not to interfere with this arm andcmove the same during rotary movement of shaft 36.

Lover 70 is freely mounted upon shaft 7 1- mounted in-the frame, one end of which shaft 7-1 carries a lever 76 provided with a cam roller arranged to engage the periphery of a cam 78 mounted on shaft- 44, on which shaft is also mounted cam 72. The other end of shaft 74 is provided with an arm 80 to which is secured a rod 62 normally pressed downwardly to maintain the follower in engage" mentwith cam 78 by means of spring 8 1. The upper end of rod 82 is connected to a horizontally extending arm of a bell crank lever 86, the upwardly extending arm of which is connected by means of a link 88 with a lever 90 pivoted upon a vertical pin and secured to the frame. Arm 90 adapted to move in the horizontal plane to which the box is raised by upward movement of plate'G-f. Accordingly, when the cam roller carried by arm 76 drops into depression 91 in the face of cam 78, lever 90 is given a.

sharp movement into engagement with the box, throwing the same sidewise on to a suitable conveyor free of the side bending machine so as to clear the same for the entrance of another box. The end of lever 90 which is'secured to link 88 is formed so as to be adjustable along the link, thereby providing for an inward or outward movement of the operative end of lever 90 in order to properly accommmodate boxes of varying sizes.

From the above description, it will be clear that there is provided a combined automatic machine which operates upon the box and automatically acts to discharge the same. It will be clear that numerous changes may be made in the specific mechanism shown without departing from the spirit of the claims.

What I claim and desire to protect by Letters Patent is:

1. In combination, means for forming a pasteboard box, means for bending inwardly the sides of a box including a plurality of movable jaws, and means for automatically transferring a box from the forming means to a position between said jaws, said means including a sloping chute device provided with anti-friction means arranged to contact with a box.

2. A machine for bending inwardly the sides of a box including a pluralilyot mow able jaws, and means for ejecting from between said jaws a box acted upon thereby, said ejecting means including a member for lifting the box from between the jaws and a second member for moving transversely a box so lifted.

3. A machine for bending inwardly the sides of a box including a plurality of movable jaws. means for aligning a box in proper relationship with said jaws to be acted upon thereby, and a chute for delivering a box to said aligning means, said chute being provided with anti-friction devices arranged to contact with a box.

4. A device, comprising a table adapted to receive and support a box, means movable laterally with respect to said table and operative to flex the sides 0? a box upon said table inwardly, and means to remove said table and a box supported thereby tree from the plane of movement of and after said flexing means have withdrawn from operative position.

In a box shaping machine, the combinationot an clevatable table, box i'lex 11;: means movable laterally with respect to said table, means to actuate said flexing means and to elevate said table when said flexing means are in inoperative position, and means also actuated by said last-named means to engage and remove a box from said table when in raised position.

6. A device, comprising a table adapted to receive and support a box. means movable laterally with respect to said table and 0perative to flex the sides of a box upon said table inwardly, means to remove said table and a box supported thereby free from the plane of movement of and after said flexing means have withdrawn from operative position, and means to automatically remove a box from said table.

7 A device, comprising a table adapted to receive and support a box, means movable laterally with respect to said table and operative to flex the sides of a box upon said table inwardly, means to remove said table and a box supported thereby free from the plane of movement of and after said flexing means have withdrawn from operative position, and oscillatory means operative to move transversely of said table to move a box therefrom.

8. A device, comprising a table adapted to receive and support a box, means movable laterally with respect to said table and operative to flex the sides of a box upon said table inwardly, means to periodically raise said table and a box supported thereby frecly above the plane of operation of said flexing means, and means operative to engage and remove a box from said table when in raised position.

5). A device, comprising a table adapted to receive and support a box, means movable laterally with respect to said table and operativc to flex the sides of a box upon said table inwardly, means to periodically raise said table and a box supported thereby freely above the plane of'opcration oi said flexing means, and oscillatable means operative to move across said table when in raised position and to remove a box therefrom.

it). The combination of a box wrapping machine, and a box shaping machine having an elcvatable table, with laterally movable flexing moans, common operating means for said wrapping and shaping machines, said shaping machine being provided with means driven by said operating means to raise said table freely of said flexing means. and means also actuated by said operating means to remove a box from said table when in raised position.

11. In a. box shaping machine, the combination of a table, box flexing means movable laterally with respect to said table, means to actuate said flexing means and to alter the elevation of said table when said flexing means are in inoperative position, and means also actuated by said last-named means to engage and remove a box from said table when out of normal operative elevation.

12. A machine for bending inwardly the sides of a box including members or acting on the sides, (lUVltHs t or relatively moving a box and the members to produce flexurc of the sides by contact with the members, and means for ejecting a box from the machine, said ejecting means including a member for removing a box from the position wherein fiexure of the sides occurs.

13. A machine for bending inwardly the sides of a box including members for acting on the sides, devices for relatively moving a box and the members to produce flexure of the sides by contact with the members, and means for ejecting a box from the machine, said ejecting means including a member for removing a box from the position wherein flexure of the sides occurs, and a second member for moving transversely :1 box so removed.

In testimony of which invention, I have hereunto set my hand at Philadelphia, Pennsylvania, on this 12th day of October, 1928.

JOHN H. ST ()RTZ. 

